Rep. Tom McClintock (R-Calif.) said the food stamp title, which he noted makes up 80 percent of the cost of the bill, should be split off.
"The agriculture portion should stand on its own," McClintock said.
Meanwhile, the House is poised to take up a stopgap-spending bill that would keep the government funded through March.
House Appropriations Committee Chairman Harold Rogers (R-Ky.) said he expects the continuing resolution to win House passage Thursday.
"It's a good tight, clean CR," Rogers said. "I think it will pass."
The conservative Club for Growth said Wednesday night that it would score the vote on the CR, calling it "bad policy simply because it extends big spending programs, layers on extra riders, and provides only short-term funding for the government so that politicians can leave Washington and/or avoid politically sensitive events."
House and Senate leaders pledged before the August recess to enact funding through March in order to avoid a politically damaging fight over keeping the government open past the end of the fiscal year, less than five weeks before facing voters.
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